These USB Serial Converters are designed to make serial port expansion quick and simple. Connecting to a USB port on your computer or USB hub, the USB Serial Converters instantly add serial communication ports to your system. By taking advantage of the USB bus, the USB to 8 port serial converter makes it easier than ever to add serial ports and serial devices to your system with easy plug-and-play and hot plug features. Plugging the USB Serial Converter to the USB port, the converter is automatically detected. There are no IRQ & COM port conflicts since the port doesnt require any additional IRQ, DMA, or memory as resources on the system.